BIOL 121 Chp 5: The Integumentary System
Upcoming SlideShare
Loading in...5
×
 

BIOL 121 Chp 5: The Integumentary System

on

  • 6,304 views

This is a lecture presentation for my BIOL 121 Anatomy and Physiology I students on Chapter 5: The Integumentary System (Principles of Anatomy and Physiology, 14th Ed. by Tortora and Derrickson).

This is a lecture presentation for my BIOL 121 Anatomy and Physiology I students on Chapter 5: The Integumentary System (Principles of Anatomy and Physiology, 14th Ed. by Tortora and Derrickson).

Rob Swatski, Associate Professor of Biology, Harrisburg Area Community College - York Campus, York, PA. Email: rjswatsk@hacc.edu

Please visit my website for more anatomy and biology learning resources: http://robswatski.virb.com/

Statistics

Views

Total Views
6,304
Views on SlideShare
5,851
Embed Views
453

Actions

Likes
4
Downloads
762
Comments
2

9 Embeds 453

http://robswatski.virb.com 302
http://robswatskibiology.wetpaint.com 59
http://virb.com 46
http://robswatskibiology.wikifoundry.com 15
http://app.junctioneducation.com 12
http://pinterest.com 7
http://www.pinterest.com 6
http://txmassageceu.com 4
http://www.txmassageceu.com 2
More...

Accessibility

Categories

Upload Details

Uploaded via as Adobe PDF

Usage Rights

CC Attribution-NonCommercial-ShareAlike LicenseCC Attribution-NonCommercial-ShareAlike LicenseCC Attribution-NonCommercial-ShareAlike License

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

BIOL 121 Chp 5: The Integumentary System BIOL 121 Chp 5: The Integumentary System Presentation Transcript

  • 1   The   Integumentary   System   BIOL  121:  A&P  I   Chapter  5 Rob  Swatski   Associate  Professor  of  Biology   HACC  –  York  Campus   Textbook images - Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.
  • 2   Integumentary   System   Skin   Epidermis   Dermis   Hypodermis   Accessory   structures   Hair   Glands   Nails  
  • 3  
  • 4   FuncLons  of   Integumentary  System   Protec5on   Regula5on   Sensory   input  
  • 5  
  • 6   Epidermis   Most   superficial   layer   Stra5fied   squamous   epithelium   5  main  layers   (strata)  
  • 7   Dermis   Thickest   layer   Dense   irregular  CT   Accessory   structures  
  • 8  
  • 9   Hypodermis   Deepest  layer   Areolar  CT  &   adipose   Stores  energy   Regulates   temperature   Blood  vessel  &   nerve  passage  
  • 10  
  • 11   Overview  of  the  Epidermis  
  • 12   4  Main  Cells  of  the   Epidermis   KeraLnocytes   Melanocytes   Langerhans   cells   (Intraepidermal   macrophages)   Merkel  cells   (TacLle   epithelial  cells)  
  • 13  
  • 14   KeraLnocytes   Kera5n   Lamellar   granules   Cell   junc5ons  
  • 15   Melanocytes   Melanin   Skin  color   pigment   Absorbs   UV  
  • 16  
  • 17   Langerhans   Cells   Develop  in   bone   marrow   Immune   func5on  
  • 18   Merkel  Cells   On  Merkel   (tac5le)  discs   Respond  to   touch  s5muli  
  • 19  
  • 20   Layers  (Strata)  of  the  Epidermis       Stratum  corneum     Stratum  lucidum*     Stratum  granulosum     Stratum  spinosum       Stratum  basale  
  • 21  
  • 22  
  • (d) Sectional view of dermal papillae, epidermal ridges, and epidermal layers Epidermal ridge Corpuscle of touch in dermal papilla LM 250x Stratum corneum Stratum lucidum Stratum granulosum Stratum spinosum Stratum basale
  • 24   Stratum   Basale   Deepest  layer   Ac5ve  mitosis   Tonofilaments   Desmosomes  
  • 25   Desmosomes  
  • 26   Stratum   Spinosum   8-­‐10  layers   “Spiny”   Strong  &   flexible   Absorbs   melanin   Desmosomes  
  • 27   Stratum   Granulosum   3-­‐5  layers   Transi5on   zone   Flat,  dying   cells   (apoptosis)   Lamellar   granules   Keratohyalin   granules  
  • 28   Stratum   Lucidum   4-­‐6  layers   Clear,  flat,   dead  cells   Finger5ps,   palms,  soles  
  • 29   Stratum   Corneum   25-­‐30  layers   Flat,  dead   cells   Rich  in   kera5n  &   lipids   Constantly   shed   Strong   barrier  
  • 30  
  • 31   Growth  of   Epidermis   Stratum  basale     (stem  cells)   Mitosis   Kera5niza5on   Epidermal   Growth   Factors  (EGFs)  
  • 32   Psoriasis  
  • 33  
  • 34   Skin  graVs  
  • 35   Dermis   CT:  collagen,  elas5c   fibers,  adipose   Papillary  &  Re5cular   regions   Fibroblasts  &   macrophages   Hair  follicles  &   glands   Blood  vessels  &   nerves  
  • 36   Papillary   Region   Areolar   CT   Adipose   Hair   follicles   Glands   Sensory   receptors  
  • 37   FuncLons  of   Papillary   Region   Strength   Elas5city   Extensibility  
  • 38   Sensory  receptors   Paccinian  corpuscles  
  • 39   Epidermal  Ridges   sweat  pores  
  • 40   ReLcular   Region   Dense   irregular  CT:   collagen!   Adipose   Hair  follicles   Glands   Sensory   receptors  
  • 41  
  • 42  stretch  marks   Lines  of   cleavage  
  • 43   Skin  Color   Jaundice   Cyanosis   Erythema  
  • 44   Jaundice   Yellowish   skin/eye   color   Bilirubin   build-­‐up   Liver  disease  
  • 45  
  • 46   Cyanosis   Bluish  color   to  skin/nails   Hemoglobin   deple5on  
  • 47   Erythema   Redness  of   skin   Dermal   capillary   enlargement   Inflamma5on,   infec5on,   burns  
  • 48   InflammaLon  
  • 49   Melanocytes   Tyrosine   Melanin   (results  may   vary)  
  • Melanin  ProducLon   Freckles   Albinism   Vi5ligo   50  
  • 51   Freckles  
  • 52   Albinism  
  • 53  
  • 54   ViLligo  
  • 55   Papa  Smurf  is   real…  
  • 56   Accessory   Structures   Hair  (Pili)   Nails   Sudoriferous   glands   Sebaceous   glands   Ceruminous   glands  
  • 57  
  • 58   Hair  (pili)  
  • 59   FuncLons  of  Hair   Insula5on   UV  protec5on   Protects  eyes   Touch  sensa5on     (hair  root  plexus)  
  • (b) Several hair shafts showing the shinglelike cuticle cells Hair shaft SEM 70x Epidermal cells
  • 61   Anatomy  of  Hair   ShaV   Medulla   Cortex   Cu5cle   Root   Internal  &   external   sheaths   Hair  Follicle   Bulb   Matrix  
  • 62   Hair   follicle  
  • 63  
  • (c) Frontal and transverse sections of hair root Hair root: Medulla Cortex Cuticle of the hair Hair follicle: Internal root sheath External root sheath Epithelial root sheath Dermal root sheath External root sheath Internal root sheath Epithelial root sheath Cuticle of the hair Cortex Medulla Hair matrix Melanocyte Papilla of the hair Blood vessels Bulb Dermal root sheath
  • (d) Transverse section of hair root Hair root: Cuticle of the hair Cortex Medulla Dermal root sheath Internal root sheath External root sheath Epithelial root sheath Hair follicle:
  • 66   Surrounding   Structures  of   Hair   Arrector   pili   Hair  root   plexus   Sebaceous   glands  
  • 67  
  • 68   Types  of   Hair   Lanugo   Vellus   Terminal  
  • 69   Lanugo  
  • 70   Vellus  
  • 71   Terminal   hair  
  • 72   Terminal   hair  
  • 73   Demodex  
  • 74   Blinky  
  • Growing   Stage   ResLng   Stage   75   Hair  Growth   Cycle  
  • 76   Hair  Color   Dark  hair   Blonde  &   Red  hair   Graying   hair   White   hair  
  • 77   Sudoriferous   Glands   Eccrine   Apocrine  
  • 78   Eccrine   gland  
  • 79   Eccrine   gland  
  • 80   Apocrine   gland  
  • 81   Sebaceous   Glands   Near  hair   follicles   Produce  sebum   Moistens  hair   Waterproofs   skin   Inhibits  bacteria   growth  
  • 82   Sebaceous   gland  
  • 83   Sebaceous   gland  
  • 84   Ceruminous   Glands   In  external   auditory  meatus   Produce   cerumen   Physical  barrier   An5microbial   Lubrica5on  
  • 85  
  • 86   Nails  
  • 87   Structure  of   Nails   Free  edge   Nail  body   Lunula   Eponychium   (cu5cle)   Nail  root  w/   matrix  
  • Free edge Nail body (plate) Lunula Eponychium (cuticle) Nail root (a) Dorsal view
  • NAIL ROOT is the portion that is not visible (b) Sagittal section showing internal detail EPONYCHIUM (cuticle) is the stratum corneum of the epidermis LUNULA is the thick, white part of the nail NAIL BED is the skin below the nail plate Sagittal plane FREE EDGE extends past the finger or toe HYPONYCHIUM secures nail to the fingertip Epidermis Dermis Phalanx (finger bone)NAIL MATRIX is the epithelium proximal to the nail root. It contains dividing cells, which produce new nail cells NAIL BODY is the visible portion of
  • 90   Thin  Skin   <  0.5  mm   Covers  most   of  body   No   epidermal   ridges  
  • 91   Thick  Skin   0.5  -­‐  5  mm   Palms,  soles,   digits   Epidermal   ridges   Stratum   lucidum   No  hair  follicles,   sebaceous  glands  
  • FuncLons  of  Skin   Cutaneous   SensaLon   Thermo-­‐ regulaLon   Blood   reservoir   ProtecLon   -­‐  Physical   -­‐  Chemical   -­‐  Biological   ExcreLon   and   AbsorpLon   Vitamin  D   synthesis   -­‐  calcitriol   92  
  • 93   Thermo-­‐ regulaLon   PerspiraLon   Evapora5on   Cooling   Shivering   Vasoconstric5on   Warming  
  • 94  
  • 95   Epidermal   Wound   Healing   MigraLon   InhibiLon   Thickening  
  • 96   MigraLon  
  • 97   InhibiLon  &  Thickening  
  • 98  
  • 99   Deep  Wound   Healing   InflammaLon   MigraLon   ProliferaLon   MaturaLon  
  • 100   InflammaLon  
  • 101   MaturaLon  
  • 102  Hypertrophic  scar   Fibrosis  
  • Keloid  scar  103  
  • 104   Collagen  fibers   ElasLc  fibers   Fibroblasts   Melanocytes   Langerhans  cells   Phagocytes   Effects   of   Aging  
  • 105   Wrinkling   Dryness  &  cracking   Blood  vessel  walls   thicken   Subcutaneous  fat  lost   …There’s   More!  
  • 106  Photodamage  
  • 107   Cancer   Hyperplasia   Tumor   (Neoplasm)   Benign   Malignant   Normal   cells   Tumor-­‐ forming   cells  
  • 108   Cancer  cell  
  • 109   Carcinogenesis   Carcinogens:     x-­‐rays,  viruses,  toxins   Gene  muta5ons   Metastasis   Angiogenesis  
  • 110   Metastasis  
  • Types  of  Cancer   Carcinoma   Melanoma   Sarcoma   Leukemia   Lymphoma   111  
  • 112   Skin  Cancer   Basal  cell   carcinoma   Squamous  cell   carcinoma   Malignant   melanoma  
  • 113   Basal  cell  carcinoma  
  • 114  Squamous  cell  carcinoma  
  • 115  Malignant  melanoma  
  • 116   Normal  nevus   (mole)   Malignant   melanoma  
  • 117  
  • 118   Risk  Factors  for   Skin  Cancer   Skin  type   Sun  exposure   Family  history   Age   Immune  health  
  • 119   Treatment  of   Cancer   Chemotherapy  
  • 120   RadiaLon   therapy  
  • 121   Burns   Heat,  electricity,   radia5on,  chemicals     Systemic  vs.  local   effects   Severity:  depth,  area,   age,  health     Shock,  circulatory  &   kidney  problems,   infec5on     Rule  of  nines  
  • 122   Burn  ClassificaLon  
  • 123   1st  Degree   Burn  
  • 124  
  • 125   2nd  Degree   Burn  
  • 126   3rd  Degree   Burn  
  • 127   Rule  of   Nines  
  • 128   Pressure  Sore     (DecubiLs  ulcer)